Power supply: 6x AA 1.5V alkaline (LR6)

USB 5.0V

Dimensions: 17 x 9 x 3.3 cm

6.7 x 3.5 x 1.3 inches

Weight: 360g including 6 batteries (18 oz)

Operational and storage environment:

Temperature: 4 °C (39 °F) to +40 °C (104 °F)

Relative humidity: < 85%

Sensors (depending on View monitor):

Sensor sampling interval:
​5 minutes

Sensor Resolution:
Temperature ∓ 0.1°C / F
Humidity ∓1%
Pressure ∓0.15hPa

Temperature sensor accuracy:
+/- 0.5C at 25C,
+/- 1.0C in 0-65C range

Initial calibration time:
VOC ~7 days
CO2 ~7 days

CO2 details:
NDIR Sensor (Non-Dispersive Infra-Red):
Measurement range 400–5000 ppm
Optimum Accuracy ±30ppm ±3% within 15 – 35°C / 60 - 95°F and 0 – 80%RH after initial calibration time

Particulate Matter (PM2.5) details:
​Laser scattering based optical particle counter
Particle size detection range: 300 nm to 10 um
Range: 0~200 μg/m³
Measurement error (PM2.5): 0 ~100μg/m3, ±10μg/m3,100 ~200 μg/m3, ±10%. Calibrated with a GRIMM using cigarette smoke source

Radon sampling: Passive diffusion chamber

Detection method: Alpha spectrometry

Measurement range: 0 – 500 pCi/L / 0 – 20,000 Bq/m3

Accuracy/precision at 5.4 pCi/L / 200 Bq/m3 after several weeks of settling period: 7 day average ~ 10 %

After 2 months ~ 5 %